一、发展简况我国稻田化学除草最早起始于黑龙江省,50年代中期试用2,4,5-涕,其后改用1,4-滴与2甲4氯防治阔叶草,50年代末期推广使用五氯酚钠防治稗草,60年代中期大量使用除草醚与敌稗,这是稻田化学除草发展的第一阶段。从70年代末期开始,我国稻田化学除草进入兴 First, the development profile China’s rice field chemical weeding first started in Heilongjiang Province, mid-50s trial 2,4,5-diphtheria, then switch to 1, 4 drops and 2 A 4 chloride control broad-leaved grass, promotion of the late 1950s The use of sodium pentachlorophenate for the control of barnyardgrass and the extensive use of weed-ether and propanil in the mid-1960s was the first phase of the development of chemical herbicides in paddy fields. Since the late 1970s, chemical weed control in paddy fields in our country has been on the rise